Compositions and methods for anti-icing/de-icing

Abstract

Methods are provided which minimize loss of an anti-icing/de-icing composition from a surface. This is accomplished by adhering the anti-icing/de-icing composition to a surface using a film-forming polymeric composition. Methods are also provided for preventing snow accumulation and/or ice formation on a surface, delaying ice and/or snow formation on a surface, extending the life of an anti-icing/de-icing composition on a surface, surface anti-icing, and surface de-icing. These methods include the application of a film-forming polymeric composition and the anti-icing/de-icing composition to the surface. Desirably, the anti-icing/de-icing composition is a reagent which reduces the freezing point of water.

1. A method for preventing or delaying formation of ice, snow, or a combination thereof on a surface, said method comprising applying a film-forming polymeric composition comprising a terpene and an anti-icing/de-icing composition to said surface;
 wherein said film-forming polymeric composition adheres said anti-icing/de-icing composition to said surface. 
 
     
     
       2. The method according to  claim 1 , wherein said anti-icing/de-icing composition comprises a salt comprising sodium chloride, calcium chloride, potassium chloride, magnesium chloride, calcium magnesium acetate, ammonium sulfate, magnesium sulfate, urea, or a combination thereof. 
     
     
       3. The method according to  claim 1 , wherein said surface is a road and said anti-icing/de-icing composition is applied to said surface at an amount of about 11 to about 500 liters/lane/kilometer. 
     
     
       4. The method according to  claim 1 , wherein said anti-icing/de-icing composition comprises about 0.005% to about 10% by volume of said film-forming polymeric composition. 
     
     
       5. The method according to  claim 1 , wherein said surface is a road and said film-forming polymeric composition is applied to said surface at an amount of about 0.30 to about 23 liters/lane/kilometer. 
     
     
       6. The method according to  claim 1 , wherein said terpene comprises about 10 to about 90% dimer, about 10 to about 50% trimer, 10 to about 50% oligomer, or a combination thereof. 
     
     
       7. The method according to  claim 1 , wherein the M n  of said terpene is about 250 to about 1000. 
     
     
       8. The method according to  claim 1 , wherein said film-forming polymeric composition comprises about 10 to about 90% w/w of said terpene. 
     
     
       9. The method according to  claim 1 , wherein said film-forming polymeric composition further comprises a viscosity modifier, a flexibility enhancer, an emulsification system, or a combination thereof. 
     
     
       10. The method according to  claim 9 , wherein said flexibility enhancer is a hydrocarbon polymer. 
     
     
       11. The method according to  claim 10 , wherein said hydrocarbon polymer is polybutene and polyisobutylene. 
     
     
       12. The method according to  claim 10 , wherein the M n  of said hydrocarbon polymer is about 300 to about 10,000. 
     
     
       13. The method according to  claim 9 , wherein said film-forming polymeric composition comprises about 1 to about 50% w/w of said flexibility enhancer. 
     
     
       14. The method according to  claim 9 , wherein said film-forming polymeric composition comprises about 1 to about 15% w/w of said emulsification system. 
     
     
       15. A method for preventing or delaying formation of ice, snow, or a combination thereof on a surface, said method comprising applying a film-forming polymeric composition and an anti-icing/de-icing composition to said surface, wherein said film-forming polymeric composition adheres said anti-icing/de-icing composition to said surface;
 wherein the M n  of said film-forming polymeric composition is about 250 to about 1000, the M w  of said film-forming polymeric composition is about 250 to about 1000, and the M z  of said film-forming polymeric composition is about 300 to about 5000. 
 
     
     
       16. A method for preventing or delaying formation of ice, snow, or a combination thereof on a surface, said method comprising applying a film-forming polymeric composition and an anti-icing/de-icing composition to said surface, wherein said film-forming polymeric composition adheres said anti-icing/de-icing composition to said surface;
 wherein the viscosity of said film-forming polymeric composition is about 200 to about 10000 centipoise at 20° C., the density of said film-forming polymeric composition is about 0.85 to about 1.0 grams/milliliter at about 20° C., or a combination thereof. 
 
     
     
       17. A method for preventing or delaying formation of ice, snow, or a combination thereof on a surface, said method comprising applying a film-forming polymeric composition and an anti-icing/de-icing composition to said surface;
 wherein said film-forming polymeric composition adheres said anti-icing/de-icing composition to said surface and comprises: 
 (i) about 10 to about 90% w/w of a terpene; 
 (ii) about 10 to about 90% w/w of a viscosity modifier; 
 (iii) about 1 to about 50% w/w of a flexibility enhancer; and 
 (iv) about 1 to about 10% w/w of an emulsification system. 
 
     
     
       18. A method for preventing or delaying formation of ice, snow, or a combination thereof, said method comprising applying a film-forming polymeric composition and an anti-icing/de-icing composition to said surface;
 wherein said film-forming polymeric composition adheres said anti-icing/de-icing composition to said surface and comprises: 
 (i) about 65 to about 75% w/w of a terpene; 
 (ii) about 1 to about 10% w/w of a viscosity modifier; 
 (iii) about 1 to about 50% w/w of a flexibility enhancer; and 
 (iv) about 3 to about 10% w/w of an emulsification system.